:root{--bg:oklch(0.985 0.004 80);--fg:oklch(0.25 0.01 60);--muted:oklch(0.5 0.01 60);--primary:oklch(0.48 0.08 200)}
*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--fg)}
main,header,footer{max-width:760px;margin:0 auto;padding:24px}
header a{font-weight:600;color:var(--fg);text-decoration:none;font-size:20px}
h1{font-size:32px;line-height:1.2}a{color:var(--primary)}
footer{color:var(--muted);font-size:14px;border-top:1px solid #ddd}